The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 1989
Filed:
Jun. 30, 1988
Applicant:
Inventors:
Yasunori Tokuda, Amagasaki, JP;
Kenzo Fujiwara, Amagasaki, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
437129 ; 148D / ; 148D / ; 148D / ; 148D / ; 148D / ; 357 17 ; 372 45 ; 372 96 ; 437 19 ; 437 22 ; 437110 ; 437133 ; 437147 ; 437167 ; 437936 ;
Abstract
A semiconductor optical element having a layer which exhibits a function of diffraction grating between a first cladding layer and a second cladding layer, wherein the layer which exhibits the function of diffraction grating consists of a superlattice layer in which crystal layers are periodically mixed to constitute a semiconductor grating layer.